{"id":"CVE-2026-88102","title":"Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.","summary":"Use after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"microsoft","product":"windows_server_2019","affected":["windows_server_2019 < 10.0.17763.9376","windows_server_2022 < 10.0.20348.5761","windows_server_2025 < 10.0.26100.33650"],"patched":["windows_server_2019 10.0.17763.9376","windows_server_2022 10.0.20348.5761","windows_server_2025 10.0.26100.33650"],"published":"2026-10-13","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:42:02.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88102","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88102","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00634,"epssPercentile":0.50166,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-08T00:00:00+00:00"},"ingestedAt":"2026-10-13T19:43:29.212Z","slug":"CVE-2026-88102","body":"## Overview\n\nUse after free in Windows Failover Cluster allows an unauthorized attacker to execute code over a network.\n\n## Affected\n\n- `windows_server_2019 < 10.0.17763.9376`\n- `windows_server_2022 < 10.0.20348.5761`\n- `windows_server_2025 < 10.0.26100.33650`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_server_2019 10.0.17763.9376`\n- `windows_server_2022 10.0.20348.5761`\n- `windows_server_2025 10.0.26100.33650`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}